My Inquiry
My Account
Taiwan Semiconductor Corporation DBLS155G-T
- Part No.:
- DBLS155G-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DBLS155G-T.pdf
- Description:
- BRIDGE RECT 1P 600V 1.5A DBLS
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DBLS155G-T from Taiwan Semiconductor is a 1.5A, 600V standard quad bridge rectifier in DBLS surface-mount package, featuring 50A peak surge current, 1.1V max forward voltage at 1.5A, and 2µA max reverse leakage at 25°C - used in AC/DC front-end stages of compact switching power supplies.
For engineers reviewing the DBLS155G-T datasheet, DBLS155G-T pinout, DBLS155G-T application, or DBLS155G-T equivalent, key selection criteria include VRRM=600V, IFSM=50A, thermal resistance RθJA=40°C/W, moisture sensitivity level 1, and UL recognition E-326854 for reliable high-volume PCB assembly.
Technical Context
This device integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals externally accessible. Its DBLS package supports automated SMT placement and reflow soldering per J-STD-002, with matte tin-plated leads and JESD201 Class 1A whisker resistance.
The DBLS155G-T operates across -55°C to +150°C junction temperature range, delivers 10.37 A²s fusing rating under 8.3ms half-sine surge, and maintains ≤2µA reverse current at rated 600V VRRM and 25°C - enabling stable operation in thermally constrained adapters and LED drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - maximum repetitive reverse voltage per diode; defines safe AC input voltage ceiling (e.g., 424V RMS) before breakdown |
| IF | 1.5 A - continuous average forward current; sets steady-state power handling limit in rectifier output stage |
| IFSM | 50 A - non-repetitive peak surge current (8.3ms); withstands inrush during cold-start of SMPS |
| VF (max) | 1.1 V @ 1.5A, 25°C - forward voltage drop per diode; determines conduction loss and thermal load at full load |
| IR (max) | 2 µA @ 600V, 25°C - reverse leakage per diode; ensures low standby power loss in offline converters |
| RθJA | 40 °C/W - junction-to-ambient thermal resistance; guides heatsinking requirements on standard FR-4 PCB |
| MSL | Level 1 - moisture sensitivity per J-STD-020; allows unlimited floor life before reflow, simplifying SMT logistics |
Pinout & Package
Package: DBLS - surface-mount, molded plastic case meeting UL 94V-0, 0.360g weight, polarity marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC input terminal 1 | One leg of AC input; connects to primary-side transformer secondary or EMI filter output |
| ~AC2 | AC input terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| +DC | Positive DC output | Common cathode node; delivers rectified positive rail to bulk capacitor and PFC/DC-DC stage |
| -DC | Negative DC output / Ground reference | Common anode node; serves as return path and system ground reference point |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognized (E-326854) | Validates safety compliance for end-equipment certification in North America without additional component-level testing |
| RoHS & Halogen-Free | Meets IEC 61249-2-21 and EU RoHS directives, enabling use in eco-compliant consumer and industrial products |
| High IFSM = 50A | Supports robust startup behavior in 100–240VAC universal-input adapters without fuse tripping or diode failure |
| Junction temp range: –55°C to +150°C | Enables deployment in sealed enclosures or high-ambient environments like LED streetlight drivers |
| Matte tin-plated leads | Ensures reliable solder wetting and intermetallic formation during lead-free reflow (J-STD-002 compliant) |
Applications
| LED Lighting Driver | USB-C Wall Adapter |
|---|---|
Use Scenario: Rectifying 100–240VAC input in compact, thermally limited LED driver modules for commercial lighting. IC Role / Device Role / Timing Role: Primary AC/DC conversion element - converts mains AC to unregulated DC bus prior to buck/buck-boost regulation. Use Value: 600V VRRM safely handles 240VAC + line surges; 40°C/W RθJA enables adequate thermal dissipation on minimal copper area. | Use Scenario: Front-end rectification in space-constrained 20–65W USB-C PD adapters with high-efficiency requirements. IC Role / Device Role / Timing Role: Full-wave bridge rectifier in quasi-resonant flyback or active clamp forward topology. Use Value: 1.1V VF minimizes conduction loss at 1.5A; MSL Level 1 eliminates bake-out step in high-throughput SMT lines. |
| Industrial Control Power Supply | Smart Home Gateway Power Stage |
Use Scenario: Providing isolated auxiliary power for PLC I/O modules operating in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Input-stage rectifier feeding 5V/12V isolated DC-DC converters. Use Value: –55°C to +150°C TJ range ensures reliability across industrial temperature grades; UL recognition streamlines system safety approvals. | Use Scenario: AC/DC conversion in fanless, enclosed smart home hubs where thermal management is passive-only. IC Role / Device Role / Timing Role: Bridge rectifier supplying bulk capacitor for downstream buck regulators powering SoC and wireless radios. Use Value: Low 2µA IR at 25°C reduces no-load power consumption; halogen-free construction meets regional environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU6K-E3/51 (Vishay) | Same 1.5A/600V rating, but GBU through-hole package (vs. DBLS SMT); higher RθJA = 50°C/W | Requires PCB through-hole mounting and wave soldering; unsuitable for fully SMT designs | Select when legacy board reuse or manual assembly is required; avoid for new SMT-only layouts |
| GBU6J (ON Semiconductor) | Identical DBLS footprint and ratings; same UL file E-326854; minor marking and date code variance | No functional or mechanical difference; qualified as second-source for supply chain diversification | Preferred for dual-sourcing where identical form-fit-function and qualification are mandatory |
Compared with GBU6K-E3/51, DBLS155G-T enables smaller PCB area and better thermal performance in SMT production; versus GBU6J, it offers identical functionality with distinct manufacturer traceability and batch control - critical for automotive-tier BOMs requiring multi-source validation.
Availability
DBLS155G-T is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB-C wall adapters requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for DBLS155G-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power and signal conditioning markets since 1979.
The DBLS series was designed specifically for high-reliability, cost-sensitive AC/DC front-end rectification in consumer and industrial power supplies - emphasizing SMT compatibility, safety certification, and thermal robustness in compact packages.
FAQ
What is the peak repetitive reverse voltage rating of the DBLS155G-T?
The DBLS155G-T has a peak repetitive reverse voltage (VRRM) rating of 600 V. This value is specified in the Absolute Maximum Ratings table and defines the maximum AC voltage the device can block in each diode leg during normal operation. It corresponds to a 420 V RMS input capability, making DBLS155G-T suitable for universal-input (100–240 VAC) power supplies without derating.
Does the DBLS155G-T require pre-baking before reflow soldering?
No, the DBLS155G-T does not require pre-baking before reflow soldering. It is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/60% RH. This eliminates the need for moisture-sensitive handling protocols, reducing process complexity and cost in high-volume SMT assembly lines using DBLS155G-T.
Is the DBLS155G-T UL recognized, and what is its file number?
Yes, the DBLS155G-T is UL Recognized under File # E-326854. This certification applies to the entire DBLS154G-T through DBLS157G-T family and confirms compliance with UL 60747-1 for discrete semiconductors. The UL recognition supports faster end-product safety certification for equipment using DBLS155G-T in North American markets.
What is the maximum forward voltage drop of the DBLS155G-T at rated current?
The maximum forward voltage drop (VF) of the DBLS155G-T is 1.1 V per diode at IF = 1.5 A and TJ = 25°C, as specified in the Electrical Specifications table. This value represents worst-case conduction loss under nominal conditions and is critical for calculating total bridge power dissipation (≈4.4 W at full load), directly impacting thermal design of the DBLS155G-T in its application.
Can the DBLS155G-T be used as a direct replacement for the DBLS154G-T or DBLS156G-T?
No, the DBLS155G-T is not a direct replacement for DBLS154G-T (400 V) or DBLS156G-T (800 V), as VRRM differs significantly. Substituting DBLS155G-T for DBLS154G-T risks overvoltage failure in 240 VAC systems; using it instead of DBLS156G-T may compromise surge margin in high-line industrial applications. Always verify VRRM alignment with system-level stress analysis before interchange.
DBLS155G-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 600 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DBLS
DBLS155G-T FAQ
1.How can I place an order for DBLS155G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLS155G-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DBLS155G-T reliable?
The price and inventory of DBLS155G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLS155G-T is usually 5 days.
3.What payment methods are accepted for DBLS155G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLS155G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLS155G-T?
DBLS155G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLS155G-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DBLS155G-T?
For technical support, including DBLS155G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLS155G-T requirements.
6.How does Aetrix verify that DBLS155G-T is sourced from the original manufacturer or authorized distributors?
All DBLS155G-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DBLS155G-T meets industry standards.
7.What is the process for return or replacement of DBLS155G-T?
All DBLS155G-T units undergo pre-shipment inspection (PSI). If there is an issue with DBLS155G-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DBLS155G-T part is unused and in its original packaging.
Return procedure for DBLS155G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBLS155G-T Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
